Grate.



C. W. HOPES.

GRATE.

APPLICATION HLED APK.8,1915.

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C. W. HOPES.

GRATE.

APPLICATION FILED APR. a, 1915.

"j BY A TTORII/EYS Patented Deo. 28, 1915.

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C. W. HOPES.

GRATE.

APPLICATION HLED APR. 1915.

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Specification of Letters Patent.

Patented lUcc. 2, 1915..

Application led April 8, 1915. Serial No. 19,915.

T 0 all whom t may concern.'

Be it known that I, CI-LiRLns W. Horns, a citizen of the United States, and a resident of Glens Falls, in the county of Ivar- States filed July 21, 1914, allowed November 25, 1914, Serial No. 852,176, and my application filed Maiz Ll, 1915, Serial No. 12115, wherein a relatively great air feed is insured through each grate-bar.

In the present application I employ similar grate-bars carried by special supporting bars which, in turn, provide for the upward passage of air therethrough in order to insure fuel combustion directly over the supporting bars as well as over the grate-bars, thereby resulting in high efliciency and complete combustion of the fuel, even though of low grades. I also prefer to mount the grate-bars in the supporting bars in such manner as to permit rocking the former, either in unison, or by sets, and I have y shown the grate-bars so formed as to permit rocking thereof in only one direction. from the normal positions thereof, whereby an unbroken horizontal fuel receiving area. results when said grate-bars are in normal positions.

My invention is fully described in the following specification, of which the accompanying drawings form a part, in which like reference characters refer to like parts in each of the views, and in which Figure l'is a plan view of a grate constructed in accordance with my present invention, the bosses on the fuel surface thereof being only partially shown; Fig. 2 is a longitudinal section taken on the line 2-2 of Fig. 1, with the adjacent supporting bar omitted; Fig. 3 is an enlarged side elevation of one of the supporting bars detached from the grate; Fig-4 Ais a plan view of an insert carried by each supporting bar, detached therefrom; Fig. 5` is a plan view of the this insert detached therefrom; Fig.' 6 is a fragmentary, perspective, view of said insert, detached; Fig. 7 is `a section, enlarged, through a supporting bar, on the line 7-7 of Fig. 11; Fig. 8 is a similar view taken on the line 8-8 of Fig. 11; Fig. 9 is an enlarged section taken on the line 9-9 of Fig. 2; Fig. 10 is a similar view on the line 10-10 of Fig. 2; and Fig. 11 is a reduced section taken on the line 11-11 of Fig. 7.

In the drawings forming a part of this application I have shown a present preferred embodiment of my invention, in conjunction with a furnace having end walls 12, side walls 13, and transverseI beams 14, of the usual or any desired formation, my grate comprising a plurality of longitudinally arranged supporting bars 15, three being shown, having a plurality of grate bars 16 arranged thereon adapted to rock in the manner hereinafter described, and end grate-bars 17 which are fixed to the supporting bars as will be later set forth.

Each of the supporting bars consists of a horizontal member 18 having a plurality 0f transverse slots 19 therethrough in spaced relationship, a vertical slot 2() directly over each transverse slot 19, and a plurality of transverse, segmental, pockets 21 also in spaced relationship with respect to each other and to the slots 19 and 20, as clearly shown in Figs. 3, 5, and 11.

The upper surface of the member 18 is provided with a recess 22 for the greater part of the length thereof, with recesses 23 adjacent the ends thereof, and I provide a web member 24 under said member 18 which is terminated within the length of the latter to form shoulders 25 which abut against the corresponding beams 14 of the furnace, as clearly shown in Fig. 2.

The supportingbars are also provided, each, with two transverse bores 26 adjacent each end thereof, an angular nut seat being provided in one surface of the bar 15 in the position of each bore 26, as indicated by dotted lines at 27, Fig. 3.

Seated in the recess 22 of each supporting bar 15 is an insert 28 having spaced bolts 29 passing downwardly therethrough in the positions of corresponding vertical slots 20, Figs. 7 and 11, a pin 30 being passed transversely through each bolt 29, in the position of the respective transverse slot 19, to lock said bolts and thereby said insert in place.

This insert 28 is longitudinally grooved in its bottom surface, as shown at 31, for the full length thereof, this groove registerrality of bores las . said bosses being ing with the upper ends of the vertical slots 20, thereby permitting air to pass upwardly through the said slots 19 and 20 and horizontally through-the insert 28. This insert is provided with a plurality of bosses 32 on the upper surface thereof and with a vertical bore 33 directly under each boss, each of provided with a longitudinal passage 34 and with a transverse passage 35 vtherethrough communicating with the respective bore 33 in order to allow air to pass upwardly to and through said bosses and be radially deflected horizontally through each boss. Y

As shown in Figs. 8, 9, 10, and 11, I prefer to incline the floors of the passages 34 and 35 inwardly and downwardly, to meet the respective bores 33, thus diverting the air at an angle to the horizontal upper surface of the insert, and it will be noted that the sides of the bosses are downwardly inclined toward each other in order to formv V- shaped grooves therebetween.

The end grate-bars 17 are each provided with a lug 36 of such size as to be seated snugly in the respective recess 23 of the supporting bars 15, .each end of said gratebars being also provided with bores 26a in register with the bores 26 in the respective supporting bars, and through which bolts are adapted to be passed to lock said gratebars 17 to said supporting bars, as shown at 37, Fig. 9, and it will be noted that, for the supporting bars located against the side walls of the furnace, a nut 38 may be seated in each of the angular seats 27, whereby the bolts 37 may be readily screwed into position, said nuts being so seated previous to the installation of these side supporting bars, as will be understood. Each of said end grate-bars 17 is provided with a plu- 39 arranged vertically therethrough communicating with angularly arranged passages 40 and 41 in bosses 42, in the manner already described, and it will be seen that air is thus free to pass to the upper surfaces of said grate-bars 17, between the bosses 42. Y y

Each of the grate bars 16 is provided with end trunnions 43 adapted to be seated in the respective segmental pockets 21 of the supporting bars15, as' clearly shown in Figs. 10 and 11, whereby said bars 16 are permitted to rock, and I prefer to extend one side of each bar 16 over the adjacent side of the contiguous bar, as shown in 2, whereby said bars 16 may only be rocked in one direction from normal position, thereby insuring register of the upper surfaces of all the bars 16 when in normal positions.

Each of the grate-bars 16 is provided with a plurality of vertical bores 16 communicating with angularly arranged passages 44 and 45 in bosses`46, these bosses and passages being similar to those set forth in the applications for patents above referred to, and it will bev seen that air may thus pass to the upper surface of the grate, beneath the fuel thereon, over the entire grate area; these bosses are made of such size and arrangement as to best adapt the gate to the particular fuel which it is desired to use, and I make no,claim as to 4such size or arrangement other than such as will best adapt the grate to the fuel.

Each grate-bar 16 is provided with a dependent arm 47 in pivotal connection with a plate 48 whereby said bars may be rocked in unison, either all of them or in sets as shown, each of the plates 48 shown being connected with a rod 49 whereby said plates may be reciprocated and rocked on their trunnions, to dump a fire or to return the parts to normal positions.

In Fig. 1 I have illustrated but few of the bosses on the upper surfaces of the respective grate-bars and inserts, but it is my intention to entirely cover said bars and inserts with the bosses, this close arrangement of bosses being shown in the sections. It will thus be seen that I not only break up each of a multitude of streams of air into a plurality of branches thereof over the gratebars themselves, but I also accomplish the same result over the supporting bars 15, thus providing an air feed over the entire grate area with the exception of the upper surfaces of the bosses. In view of the small size of these bosses, and their close arrangement, the fuel cannot fall through the grate andis subjected to the action of the air over practically the entire surface thereof, thus resulting in high fuel efficiency even with very low grade fuels.

My invention is very simple, very practical, highly eflicient, readily installed, and well adapted to the purposes for which it is designed, and, because of the uniformity between the three elements forming the same, grates of any desired areas may be constructed therewitlnthere being but three elements, and the members of each element being exactly alike.

While I have shown a present preferred form of embodiment, I do not desire to limit myself thereto, but may malte changes thereover, within the scope of the following claims, without departing from the spirit of my invention, or sacriiicing its advantages.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A grate, comprising Ia plurality of grate-bars and supporting bars therefor, each of said supporting bars being provided with a longitudinal passage closed at its end's, with a plurality of transverse slots and vertical slots joining the respective transverse slots with said passage, with a plurality of vertical slots branched upwardly the grate-bars 16 Liemers from saidpassage, and a plurality of passages connecting each of said last named vertical slots with the atmosphere on the upper side of said grate.

2. A grate, comprising a plurality of gratebars and supporting bars therefor, each of said supporting bars being formed of two members, one arranged above the other, the lower member having a plurality of transverse slots therethrough and vertical slots connecting with the respective transverse slots and opening inthe upper side of said lower member, and said upper member having a longitudinal channel in.

the under side thereof connectingall of said vertical slots, with vertical slots extending upwardly fromsaid channel, and with lateral slots joining sai'd upper member vertical slots with the atmosphere above said grate.

3. A grate, comprising a plurality of grate-bars and supporting bars therefor, each of said supporting bars comprising a member recessed in its upper surface and provided with transverse slots therethrough and vertical slots joining the respective transverse slots, and an insert in said recess provided with a plurality of capped bores arranged vertically therein and communicating with said vertical slots.

4. ln a grate, a grate-bar supporting bar, provided with a recess in the top thereof, with transverse slots, and with vertical slots meeting the respective transverse slots to lead air upwardly through said supporting bar, and an insert held in said recess a provided with a longitudinal air channel in the bottom thereof, in register with said vertical slots, with a plurality of vertical bores communicating with said air channel, and with a cap over each vertical bore having air passages therethrough communicating with the respective bore.

ln testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES WILLAM HUPES. Witnesses: y y

el. C. LARSEN, PHILIP D. ROLLHAUS. 

